say it: pree-a-duh-LES-int
preadolescent is an adjective meaning "of or relating to or designed for children between the ages of 9 and 12". It carries one recorded sense.
Definitions, synonyms and semantic relations for preadolescent come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.